A victim of her father's debt, 'Little Dorrit' has spent her childhood behind the heavy, iron doors of Marshalsea Prison. But will a chance meeting change her life? Andrew Davies' gripping new series brings to life Dickens’ classic tale of hardship and struggle in 1820s London, where larger-than-life characters leap from rags to riches (and back again), and fortunes can be reversed in an instant.

Returning home after many years abroad, Arthur Clennam is surprised by the mysterious presence of Amy Dorrit, a young seamstress, in his mother's house. Troubled by the Dorrits' plight, and suspecting his own family's involvement in their downfall, he resolves to help them. Delving into the puzzling connections between the two families, Arthur entangles himself in a mystery that transcends the walls of Marshalsea to include an epic scope, and a personal resonance, that makes this tale one of the most exhilarating and stirring in history. And as the truth unfolds, Arthur discovers that the shadow of debt can fall in the most unlikely of places…